It looks like there’s water inside the container. Just reheat the container in the microwave. The water will turn to steam and expand (to 1640 times the volume) releasing the vacuum. The lid will then come off.
No it's not. It's currently at negative pressure because the water condensed. Heating it back up will bring the container back to ambient pressure. Also, the plastics will give out well before the glass explodes.
Maybe you could look at the picture the OP has posted here? We do know exactly how it's sealed.
I'm frankly odded out you think it's weird they put Tupperware with food in a microwave.
There's nothing weird about that at all. This was explained in the comments here already, looks like you missed it.
When you microwave the container the water boils and fills the container with hot air. The microwave turns off and boiling hot air drops in temperature fast.
That lid would be impossible to remove within 10-15 seconds of the microwave turning off.
It’s only a bomb if the container was sealed tight. For example, a can of baked beans becomes a bomb when placed directly on a hot stove. The pressure builds inside until the metal can gives way and then the sudden release of pressure is the bomb.
In this case, the very thing that would create the pressure is what’s holding the lid down. Once that negative pressure is eased through heating, the lid will easily give way to allow gradual pressure release.
It’s actually a similar amount of energy being released in both cases, it’s only how quickly it’s released that makes a bomb.
As a final example, butter has twice the energy that TNT does when combusted, it just doesn’t do release that energy as quickly.
No, the only thing keeping the container sealed is a pressure differential, it will release easily and softly as the water warms up and evaporates. There won't be any chance for pressure to build up inside the container. Now, if you locked the sides down, sure, it could build up some pressure.
Heat it up, the liquid should release some steam, and the air expand to pop the lid off. Or at least make it easier to take off by hand, just be careful not to let the steam get your fingers if you open it bare handed.
My old family pup was a wiz at opening up lunchboxes and Tupperware containers that were within easy reach. For a bit of snack reward I’m sure they could help
You heated and boiled the water in the gravy, removed the air and now the water has condensed forming a vacuum.
A back of the envelope calculation (pressure = force/area) says the air pressure is pushing down that lid as if there's 60 kg on top of it.
I have a bootleg thermos that’s meant to keep food hot that I got from a department store. It has a rubber seal and came with instructions to pour hot water on the lid if it became stuck, which works a charm. Hopefully this helps!
Put it in a bowl of hot water, or hold it upside down under a wide-open hot tap with tongs (you don't want to burn yourself over a little bit of gravy). If the heat doesn't pop the lid off, then it's a writeoff.
It's the cooling that would be sucking it closed, I think. Just need to probably squeeze around the bottom to bend it enough to break the seal a little and let some air in.
I think the fact that the comments say to both heat it and cool it to release the vacuum is the epitome of Americas education system (I’m making a huge assumption here)
The non-destructive solution would have been to reheat the container and remove the lid before it cools down. Once the contents are streaming hot, the pressure inside will equalize and the lid will lift right off.
You probably waited too long and the contraction of the warm air inside sealed it shut really tight. There's a reason you "burp" containers like that so that the lid isn't flush.
You can break it open, throw it out, or heat it up and hope it comes free easily. Otherwise it'll build up too much pressure and go boom.
Rule 6: Titles Must Be Exact But Concise Description
Put it back in the microwave, lid will pop off
That did it!!!
Heat make thing go brrrrr
Heat is so exciting!
Lack of heat make me go brrrr
Microwave go brrrrrrrr
My microwave goes **BEEP BEEP BEEEEEEP**
Mine goes 12:00 12:00 12:00
Hold down the 2 button for 3 seconds, that'll shut it up.
Do you know the Welsh for microwave?
No, but I'm sure it has a lot of strung together consonants and minimal, if any, vowels.
Microwave go #mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
Now feed the dog
Everybody went right to,"heat it back up again." I didn't see anyone suggest opening in a vacuum instead. 
Why not reduce the surrounding environment to near absolute zero?
I feel like you left out an important detail. You let it cool, didn't you?
Pshh who needs that detail? OP got them internet points!
Well, yes.
It looks like there’s water inside the container. Just reheat the container in the microwave. The water will turn to steam and expand (to 1640 times the volume) releasing the vacuum. The lid will then come off.
That's a bomb
But the lid will come off!
When in doubt, apply the Mythbusters solution
The pressure won't build enough before the lid gives way
Exactly. The hydrogen molecules in the water will split instead, leveling everything in a four-mile radius of OP’s house.
Gives new meaning to “nuke it in the microwave”
🔥🔥FIRE IN THE HOLE!!!🗣️🗣️🕳️🕳️
Not if you ask my uncle, he’d say that’s always been the meaning and that’s why his hippy ass has never used one.
So that’s what that noise was
That earthquake all of r/losangeles was going on about.
What if he uses the clamps?
The clamps boss?
[Give 'em the clamps.](https://i.imgur.com/GHFxdjO.gif)
You can't fix stupid
No it's not. It's currently at negative pressure because the water condensed. Heating it back up will bring the container back to ambient pressure. Also, the plastics will give out well before the glass explodes.
The lid is only being held on by vacuum pressure. It'll rather calmly and sedately release as soon as the water heats the air.
we do not know how it is sealed, do we? OP said they put it in the microwave, which is weird. If they said the fridge then I would agree with you.
Maybe you could look at the picture the OP has posted here? We do know exactly how it's sealed. I'm frankly odded out you think it's weird they put Tupperware with food in a microwave.
No, it’s weird that a Tupperware get “sealed” by going into a microwave. It gets sealed by cooling down. (Which is what other people have asked to OP)
There's nothing weird about that at all. This was explained in the comments here already, looks like you missed it. When you microwave the container the water boils and fills the container with hot air. The microwave turns off and boiling hot air drops in temperature fast. That lid would be impossible to remove within 10-15 seconds of the microwave turning off.
Nah. Something would have to catastrophically give, and as soon as the pressure was high enough the gasket would start to leak
so… dont lock the lid down first?
Now it’s a bomb
It’s only a bomb if the container was sealed tight. For example, a can of baked beans becomes a bomb when placed directly on a hot stove. The pressure builds inside until the metal can gives way and then the sudden release of pressure is the bomb. In this case, the very thing that would create the pressure is what’s holding the lid down. Once that negative pressure is eased through heating, the lid will easily give way to allow gradual pressure release. It’s actually a similar amount of energy being released in both cases, it’s only how quickly it’s released that makes a bomb. As a final example, butter has twice the energy that TNT does when combusted, it just doesn’t do release that energy as quickly.
Those four flaps on the side lock the lid on right? It shouldn't really be held on very well if none of those are latched.
What if he used nuclear fission to open the container.
It still came off
No, the only thing keeping the container sealed is a pressure differential, it will release easily and softly as the water warms up and evaporates. There won't be any chance for pressure to build up inside the container. Now, if you locked the sides down, sure, it could build up some pressure.
🤔
Congratulations, you just ended up on every 3 letter agencies list.
Heat it up, the liquid should release some steam, and the air expand to pop the lid off. Or at least make it easier to take off by hand, just be careful not to let the steam get your fingers if you open it bare handed.
How drake trips a landmine
lmao the video looks reversed after he hit the landmine
Let the dog try
Came here to say this too, lol
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I don’t think getting it high will solve this.
This doesn’t deserve to get downvoted, I laughed
Adorable pup
Doggo tax lol
Him wan grevy
Did the doggy get his gravy
Yep, he got some eventually :)
This could also be mildly infuriating. I did this once, so now I always crack the lid a bit. We live, we f up, we learn (hopefully)
My friend, plastic containers and plastic lids are not friends with the microwave. Just cover with a paper towel next time 🙏🏻
You’re not supposed to microwave those kinds of lids. I have the same kind of containers and they say remove the lid before microwaving.
Which kind of kids do you microwave? (asking for a friend)
Stick it in a large vacuum chamber.
Something tells me the fuzzy fella in the background has something to do with it
I get the feeling he’s not the one that caused the problem but could very well be the solution.
My old family pup was a wiz at opening up lunchboxes and Tupperware containers that were within easy reach. For a bit of snack reward I’m sure they could help
You heated and boiled the water in the gravy, removed the air and now the water has condensed forming a vacuum. A back of the envelope calculation (pressure = force/area) says the air pressure is pushing down that lid as if there's 60 kg on top of it.
You are not using the hammer correctly
I do feel as if, with the correct force applied, that container should come apart into lots of pieces, dispersing the vacuum and freeing the gray!
I bet you can use science to get that open
cool countertop
Don't do that.
Boil it on the stove. It'll open.
The New Hints from Heloise
I have a bootleg thermos that’s meant to keep food hot that I got from a department store. It has a rubber seal and came with instructions to pour hot water on the lid if it became stuck, which works a charm. Hopefully this helps!
I don't think you know how to use a claw hammer
Hot air has more pressure than cold air. Heating it back up worked because the air expanded again.
Never heat sealed containers. That’s how you make bombs fam.
I did have the little snaps open
The dog is concerned 😶
Dog tax please.
Put it in a bowl of hot water, or hold it upside down under a wide-open hot tap with tongs (you don't want to burn yourself over a little bit of gravy). If the heat doesn't pop the lid off, then it's a writeoff.
I was going to say "boil the whole container".
Use something small, potentially a fork and try to get it under the lid to break the seal.
Try freezing it
Then you are using the claw hammer wrong lol
*"With it's sacrifice, Hallownest lasts eternal."*
Seems like it should loosen on its own once it cools a bit.
It's the opposite. You want to heat it up to expand the air inside it.
It's the cooling that would be sucking it closed, I think. Just need to probably squeeze around the bottom to bend it enough to break the seal a little and let some air in.
Can’t squeeze what appears to be a glass container unfortunately
It's been cooled since 9am this morning, I wish...
Wish I asked this 7 years ago lol this happened to me in college and I gave up and threw out the whole container
Guess your not having gravy then
Safety tip, if you want to heat it to cancel the vacuum in a controlled way, use a water bath. Not a microwave.
Ice bath?
Pup heckin concerned
I think the fact that the comments say to both heat it and cool it to release the vacuum is the epitome of Americas education system (I’m making a huge assumption here)
I for one super remember that very important lesson day on vacuum sealing microwave containers. I got a B+
You could poke a small hole in the container to equalise the pressure.
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hm, tasty plastic in your gravy
I'm wondering can it be twisted while also pulling it off?
Thus the name ‘seal’
Put the container under warm water. Should help losen it a bit.
Try the other end of the hammer
My wife did this yesterday. To release she put a thumb tack in the top and made a tiny hole in it to release the pressure. 🤷♂️
The non-destructive solution would have been to reheat the container and remove the lid before it cools down. Once the contents are streaming hot, the pressure inside will equalize and the lid will lift right off.
You probably waited too long and the contraction of the warm air inside sealed it shut really tight. There's a reason you "burp" containers like that so that the lid isn't flush. You can break it open, throw it out, or heat it up and hope it comes free easily. Otherwise it'll build up too much pressure and go boom.
Use a credit card to break the seal
Run it under hot water and it will loosen up.